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PEEK and fiberglass intra-radicular posts: influence of resin cement and mechanical cycling on push-out bond strength

Monteiro, Lara Christie ; Pecorari, Vanessa Gallego Arias ; Gontijo, Isabela Guerra ; Marchi, Giselle Maria ; Lima, Débora Alves Nunes Leite ; Aguiar, Flávio Henrique Baggio

Clinical oral investigations, 2022-12, Vol.26 (12), p.6907-6916 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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  • Título:
    PEEK and fiberglass intra-radicular posts: influence of resin cement and mechanical cycling on push-out bond strength
  • Autor: Monteiro, Lara Christie ; Pecorari, Vanessa Gallego Arias ; Gontijo, Isabela Guerra ; Marchi, Giselle Maria ; Lima, Débora Alves Nunes Leite ; Aguiar, Flávio Henrique Baggio
  • Assuntos: Adhesives ; Aging ; Composite materials ; Dental roots ; Dentistry ; Medicine ; Original Article ; Rehabilitation ; Statistical analysis
  • É parte de: Clinical oral investigations, 2022-12, Vol.26 (12), p.6907-6916
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Objectives To evaluate the bond strength of four types of posts (pre-fabricated fiberglass post, fiberglass post anatomized with composite resin, milled fiberglass post, and milled polyetheretherketone (PEEK) post), and two types of resin cements (conventional and self-adhesive) by assessing immediate bond strength and post-mechanical aging at each root third. Materials and methods Bovine endodontically treated roots (16 groups, n  = 8) were prepared and the posts were produced and luted; the specimens of aging groups were cycled (300,000 cycles under 50 N load at 1.2 Hz frequency); six slices of each root were obtained; push-out test was performed by using a universal testing machine (500 N load at 1 mm/min cross speed); fracture pattern was classified into five levels. The statistical analyses used were three-way ANOVA, Tukey’s test (for bond strength), and Fisher’s test (for fracture pattern) ( α  < 0.05). Results Differences were found between the cements for posts (conventional: p  < 0.001; self-adhesive: p  = 0.002), whereas no difference was found for root region ( p  = 0.941; p  = 0.056, respectively); analysis of each root showed significant differences for cements ( p  < 0.001), posts ( p  < 0.001), and mechanical cycling ( p  = 0.001); in terms of double interaction, differences were found for posts and mechanical cycling ( p  = 0.005); no other interactions were observed (double or triple); the fracture pattern showed difference between the groups for both cements. Conclusions Milled PEEK posts seem to be a good clinical option, but they require improvement of CAD-CAM technology and advances towards their adhesion. Clinical relevance Milled posts are promising and can reduce clinical time for rehabilitation of extensively destroyed teeth.
  • Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
  • Idioma: Inglês
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